One good way to start off is less text intensive posts, maybe photography as many of them would have mobile phone cameras and as you mentioned, Instagram is second nature to them - so it wouldn't feel so much of a 'chore' as continuing their Insta fun but on steemit instead... Of course, accompanied by some descriptives or background information instead of just a plain piece of photograph! The teammalaysia 120 words rule for post-promotion would be a good guide... ;)